
#and
# age = 18
# # if  0 < age < 100:
# if age > 0 and age < 100:
#     print("输入正确")
# else:
#     print("输入错误")

#or
# # 1.定义变量
# python_score = 80
# c_score = 30
# if python_score >= 60 or c_score >= 60:
#     print("成绩合格")


#not
age = 19
if not (age < 18):
    print("已成年")
else:
    print("未成年")


# not 构成条件
# 定义变量(True表示本公司员工)
# 定义变量
employer = True   # 假设已经固定值
# if not employer:
if not (employer is False):
    print("本公司员工")
else:
    print("非本公司员工")


















